Grille unit



FIG. 1 is a front and left side perspective view of a grille unit showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The portions of the grille unit shown in dashed broken lines are for environmental and illustrative purposes and form no part of the claimed design. The dot-dashed broken lines represent boundaries of the grille unit and form no part of the claimed design. 

CLAIM The ornamental design for a grille unit, as shown and described. 